Acquisitions - Intangible Assets Acquired (Details) - Vencore $ in Millions	May 31, 2018 USD ($)
Business Acquisition [Line Items]
Fair Value	$ 753
Weighted-average Amortization Period (in years)	12 years
Program assets
Business Acquisition [Line Items]
Fair Value	$ 625
Weighted-average Amortization Period (in years)	13 years
Developed technology
Business Acquisition [Line Items]
Fair Value	$ 105
Weighted-average Amortization Period (in years)	6 years
Backlog
Business Acquisition [Line Items]
Fair Value	$ 22
Weighted-average Amortization Period (in years)	1 year
Favorable leases
Business Acquisition [Line Items]
Fair Value	$ 1
Weighted-average Amortization Period (in years)	4 years

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

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